FLOW IN POLYCRYSTALLINE ICE

By Chris Wilson and Brett Marmo

Contents

List of figures

Abstract

Part 1

1.1 Introduction

1.2 Polycrystalline aggregates deformed in pure-shear

1.3 Dynamic recrystallisation

1.4 Grain shape and preferred orientation change

1.5 Fabric

1.6 Evolution of glacial ice during deformation

1.7 References

1.8 Acknowledgments

Part 2

2.1 Time lapse photography

2.2 Glaciers

2.3 Dislocations

2.4 Bernal-Fowler rule

2.5 Generation of defect structures

2.6 Crystal structure

2.7 Ice

2.8 Basal glide

2.9 Strain rate for glide on basal systems

2.10 Critical resolved shear stress

2.11 Non-basal glide

2.12 Diffusional flow

2.13 Plastic deformation

2.14 Primary creep

2.15 Secondary creep

2.16 Tertiary creep

2.17 Deformation maps

2.18 Grain growth

2.19 Grain size reduction

2.20 Anisotropic flow law for ice